Side bearing for car-bodies



(No Model.) 2 Sheets-Sheet 1.

L. K. JEWETT. SIDBBEARI'NG FOR OAR BODIES.

No. 427,692. Patented May 13, 1890.

.IHIIHIIHI (No Model.) 2 SheetsSheet 2.

LJ K. JEWETT. SIDE BEARING FOR GAR BODIES.

No. 427,692. Patented May 13, 1890'.

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UNITED STATES PATENT OFFICE.

LUTHER K. JElVETT, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE J EWVETTSUPPLY COMPANY, OF PORTLAND, MAINE.

SIDE BEARING FOE SAW-BODIES.

SPECIFICATION forming part of Letters Patent No. 427,692, dated May 13,1890.

Application filed September 6, 1889. Serial No. 323,145. (No model.)

To all whom it may concern.-

Be it known that I, LUTHER K. JEWETT, of Boston, county of Suffolk,State of Massachusetts, have invented an Improvement in Side Bearingsfor OarBoclies, of which the following description, in connection withthe accompanying drawings, is a specification, like letters on thedrawings representing like parts.

This invention relates to anti-friction supports or side bearings forcar-bodies, and is an improvement upon the anti-friction support shownand described in another application, Serial No. 3l6,027, filed by meJune 29, 1889.

My present invention has for its object to improve the construction ofthe anti'friction supports, as will be described, whereby the sideoscillation of the car-body may be compensated for without inflictingstrain upon the snpporting-springs for the anti-friction device.

Another feature of my invention consists in providing means, as will bedescribed, by which the endthrust is relieved from the said springs.

My invention therefore consists, essentially, in the combination, with acar-body and its truck, of one or more side sustaining-springsindependent of the car-truck and interposed between the said truck andear-body, a firm support for said springs, and a cap or seat for saidsprings, provided with a semicircular groove, and a cylindrical bodyfitted into said groove to permit the said cap to rock without lateralmotion, substantially a's will be described.

Other features of my invention will be pointed out in the claims at theend of this specification.

Figure 1 is a side elevation of a sufficient portion of a car body andits car-trucktprovided with my improved anti-friction support or sidebearing to enable my invention to be understood; Fig. 2, a transversesection of the car-truck on line w 00, Fig. 1, looking toward the left;Fig. 3, a sectional detail to be referred to the section being taken online 51; to, Fig. 1; Figs. 4 and 5, details to be referred to, and Fig.6 a modification to be referred to.

The car-truck A, which maybe of any usual or well-known construction,the chair a, secured, as by bolts ct, to the side frames a of thecar-truck and provided, as shown, with the toe a adapted to shoulder onthe equaliZer-bar a, may be substantially such as shown and described inthe application referred to.

The chair a has secured to or forming part of it abase-plate I), (seeFig. 3,) provided with a preferably semicircular groove or depressionZ7, into which is fitted or rests a cylindrical or circular body,preferably a rod or bar b upon the upper half of which is fitted ordepression, into which is fitted a cylindrical or circular body,preferably abar or roller b having fitted upon it the base-plate (1 ofmy improved anti-friction device, which is substantially the same asshown and described in the application referred to, it consisting ofrollers 0, provided with arbors 0, upon which are supported aspacing-frame 0 the arbor of the center roller 0 being provided with apinion in mesh with teeth 0 on the base-plate and with like teeth 0 onthe top plate c", secured to the ear-body.

The base-plate Z) is firmly secured to or forms part of the chair a, andas the car-body A oscillates or sways sidewise the graduatingsprings bare relieved from side strain by the rocking or pivotal movement of thespringseat Z1 on the roller b and the baseplate Z2 on the roller b.

To relieve the springs I) from strain caused by the forward or backwardmovement of the car-body with relation to the car-truck,

fitted Within and locked by the uprights d (1, so that when either thecar-body or the truck is moved endwise With relation one to the otherthe spring-seat b and the top plate 12 practically form one casting orpiece and transmit the end-thrust to the friction-rollers 0, thusrelieving the graduating-springs b from strain.

I have herein shown and described the base-plate b as secured to orforming part of the chair; but in somekinds of trucks-as, for instance,in the Well-known \Vagner sixwheel truckthe base-plate b may be securedto or form part of the housing c (see Fig. 6) for the center wheels ofthe truck, and in this case the housing 0 forms a firm support for theanti-friction device.

I have herein shown spiral springs; but instead thereof ellipticalsprings maybe used.

I have specifically described the side bearing-springs as used tosupport the anti-friction device, and While in most cases the two partswill be used together, I do not desire to limit my present invention inthis respect, as the rocking cap and seat may be used to advantage Whenthe springs rest on a firm support, such as described, and thebase-plate b is secured to or forms part of the car-body. I prefer torock both the cap and seat for the said springs, as by this means allthe strain caused by the side oscillation of the car is relieved fromthe said springs; but, if desired,

only one part, as the cap, may be made to rock, and the other part, asthe seat, may be made stationary. In this case the upper part of thesprings Would be relieved from strain.

I am aware that a car-truck has been constructed in which the springssupporting the bolster have been provided Witha cap having a shallowgroove in Which rests a cylindrical body secured to the bolster. In thisconstruction the cap is free to oscillate or slide laterally 0n the saidcylindrical body. construction is impracticable for my purpose.

I claim 1. The combination, with a car-body and its truck, of one ormore side sustainingsprings independent of the car-truck and iiiterposedbetween the said truck and carbody, a firm support for said springs, anda rocking cap or seat for said springs, provided with a semicirculargroove, and a roller fitted into said groove to permit the said cap torock Without lateral motion, substantially as described.

2. The combination, with a car-body and its truck, of an anti-frictiondevice, substantially as described, a firm support for saidanti-friction device, one or more springs to support said anti-frictiondevice, and a rocking cap or seat for said springs, substantially asdescribed.

3. The combination, with a car-body and its truck, of one or more sidesustaining springs, a firm support for said springs, and a rocking capor seat, and means to lock said spring-cap Within the spring-seat,whereby the said springs are relieved from strain by end-thrusts,substantially as described.

In testimony whereof Lhave signed my name to this specification in thepresence of two subscribing Witnesses.

LUTHER K. JEWET'J.

Witnesses:

.lAS. H. CHURCHILL, E. J. BENNETT.

This

